Answer:
a) F on the right
, b) F up
, c) Force to the left
, d) Force down
, e) Force towards the screen
, f) Force is zero
Explanation:
The equations for the forces are
Electric
F = q E
Magnetic
F = q v x B
The Bold are vectors, the charges are positive
Let's apply these equation to the proposed situations
a) as the load is positive the force goes in the direction of the field
F on the right
b) as the load is negative the force goes in the opposite direction to the field
F is up
c) positive charge with speed down and magnetic field out of the screen.
For this part we will use the right hand rule. The thumb is in the direction of the speed, the fingers extended in the direction of the magnetic field and the palm is in the direction of the force for a positive charge
Force to the left
d) negative charge, speed to the right magnetic field between the screen
The force has direction
Force down
e) positive charge, electric field towards the screen.
Force in the direction of the field
Force towards the screen
.f) negative charge, speed to the right, magnetic field to the right
The vector product is zero,
Force is zero
